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Employee Benefit Plans - Schedule of Net Pension Cost (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Components of net pension cost      
Service cost - benefits earned during the year $ 946 $ 1,491 $ 1,692
Interest costs on projected benefit obligations 1,428 1,174 1,072
Expected return on plan assets (2,178) (2,282) (1,843)
Expected administrative expenses 115 118 104
Amortization of prior service cost 0 0 0
Amortization of unrecognized net (gain) loss (640) 0 367
Net periodic pension cost $ (329) $ 501 $ 1,392
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other